J Biomed Mater Res A:PCL纳米纤维可有效促进骨再生

2018-03-15 MedSci MedSci原创

组织工程对治疗退行性疾病包括骨修复显示出很大的希望。聚合物纳米纤维提供用于间充质干细胞的附着和生长的三维(3-D)支架。越来越多的证据支持,支架上的纤维排列在干细胞的活力和分化中起主要作用。本研究中,我们比较了在排列的(NanoAligned TM)和随机的(NanoECM TM)取向的聚己内酯(PCL)纳米纤维涂覆的板中培养的犬脂肪组织来源的间充质干细胞(cADMSC)的细胞活力,以控制聚苯乙烯

组织工程对治疗退行性疾病包括骨修复显示出很大的希望。聚合物纳米纤维提供用于间充质干细胞的附着和生长的三维(3-D)支架。越来越多的证据支持,支架上的纤维排列在干细胞的活力和分化中起主要作用。

本研究中,我们比较了在排列的(NanoAligned TM)和随机的(NanoECM TM)取向的聚己内酯(PCL)纳米纤维涂覆的板中培养的犬脂肪组织来源的间充质干细胞(cADMSC)的细胞活力,以控制聚苯乙烯组织培养板。使用RT-PCR根据骨细胞标志物COL1A1和osterix的表达评估平板诱导cADMSCs分化成骨细胞、脂肪细胞和神经元的能力;脂肪细胞标记物PPARγ2和LPL;和神经元标记巢蛋白。

增殖结果表明,与随机取向的PCL纳米纤维涂层或对照平板相比,培养7天后,对齐定向的PCL纳米纤维涂覆的平板更适合用于cADMSCs的底物。此外,我们证明,与对照平板相比,两种3-D PCL纳米纤维涂覆的平板都是用于cADMSCs分化成骨细胞的更好的支架。

总之,我们的研究结果证实,PCL纳米纤维是适用于犬体内再生医学的组织工程材料。

原始出处:

Pandey S, Rathore K, et al., Aligned nanofiber material supports cell growth and increases osteogenesis in canine adipose-derived mesenchymal stem cells in vitro. J Biomed Mater Res A. 2018 Feb 22. doi: 10.1002/jbm.a.36381. [Epub ahead of print]

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    2018-05-22 sunylz
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    2018-03-17 lsj630
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